6、分不变),具体含量由供需双方协商确定。当ω(B)≤0.002%时,为与宇航工业用的GH4169合金加以区别,合金牌号为GH4169A。表1-1[1]%类别C Cr Ni Co Mo Al Ti Fe标准≤0.08 17.0~21.0 50.0~55.0 ≤1.02.80~3.30 0.30~0.70 0.75~1.15 余优质0.02~0.06 17.0~21.0 50.0~55.0 ≤1.0 2.80~3.30 0.30~0.70 0.75~1.15 余高纯0.02~0.06 17.0~21.0 5
7、0.0~55.0 ≤1.0 2.80~3.30 0.30~0.70 0.75~1.15 余类别NbB Mg Mn Si P S CuCa不大于标准4.75~5.500.0060.010.350.350.0150.0150.300.01优质5.00~5.500.006 0.010.350.350.0150.0150.300.01高纯5.00~5.500.0060.0050.350.350.0150.0020.300.005续表1-1 %类别BiSnPbAg SeTeTlN O不大于标准------0.0005---